51335873 has 2 divisors, whose sum is σ = 51335874. Its totient is φ = 51335872.

The previous prime is 51335861. The next prime is 51335899. The reversal of 51335873 is 37853315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40233649 + 11102224 = 6343^2 + 3332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51335873 is a prime.

It is not a weakly prime, because it can be changed into another prime (51335833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25667936 + 25667937.

It is an arithmetic number, because the mean of its divisors is an integer number (25667937).

Almost surely, 2^51335873 is an apocalyptic number.

It is an amenable number.

51335873 is a deficient number, since it is larger than the sum of its proper divisors (1).

51335873 is an equidigital number, since it uses as much as digits as its factorization.

51335873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 35.

The square root of 51335873 is about 7164.9056518561. The cubic root of 51335873 is about 371.6552887408.

The spelling of 51335873 in words is "fifty-one million, three hundred thirty-five thousand, eight hundred seventy-three".